# Airworthiness Directives; General Electric Company CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2007-08-28 · Effective 2007-09-12 · 72 FR 49183
## Document
- **Document number:** E7-16554
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 72 FR 49183
- **Publication date:** 2007-08-28
- **Effective date:** 2007-09-12
- **FAA docket:** Docket No. FAA-2007-27687
## Abstract

The FAA is revising an existing airworthiness directive (AD) for General Electric Company (GE) CF34-1A, -3A, -3A1, -3A2, -3B, and - 3B1 turbofan engines. That AD currently requires a one-time inspection of certain fan disks for electrical arc-out indications, replacing fan disks with electrical arc-out indications, and reducing the life limit of certain fan disks. This AD results from a comment received on AD 2007-07-07, and from recently issued revisions to the applicable GE Alert Service Bulletins (ASBs). We are issuing this AD to prevent an uncontained fan disk failure and airplane damage.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/08/28/E7-16554/airworthiness-directives-general-electric-company-cf34-1a--3a--3a1--3a2--3b-and--3b1-turbofan)
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